Parts and assemblies
Part files hold one part, or several bodies that share sizes. Assemblies bring parts in, join them with turning and sliding joints and check that nothing overlaps.
ToolsDesign
gcad
Parametric CAD, one operation per line
A part is a text file read like G-code: sketch, extrude, hole, fillet, one operation to a line. Assemblies place the parts with mates and joints, and the viewer rebuilds the model every time you save.
- Latest
- 0.3.1
- Released
- 12 Oct 2026
- Licence
- GPL-3.0-or-later
What it does
Simulation on the GPU
Torque, static, thermal, modal and buckling studies, and air flow by a lattice Boltzmann solver: 21 million cells around a robot arm in about two minutes.
Out to the shop
Exports STEP, STL, OBJ, 3MF, SVG drawings with section views, and a bill of materials. Built in Rust on the monstertruck B-rep kernel.
Written for agents too
Every line reports what it did, so a coding agent can write a part, check it and fix it without looking at the screen.
Works with
STEPSTLOBJ3MFSVG
Opens
.gcad.gasm.gsim
Drop one of these on the Bench Suite window and it opens here.
